The influence (for good or ill) of Plato's work is immeasurable. Western thought, one might say, has been Platonic or anti-Platonic, but hardly ever non-Platonic.

True ignorance is not the absence of knowledge, but the refusal to acquire it.

The growth of knowledge depends entirely upon disagreement.

In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality.

The question is not how to get good people to rule; THE QUESTION IS: HOW TO STOP THE POWERFUL from doing as much damage as they can to us.

If you can't say it simply and clearly, keep quiet, and keep working on it till you can.

The best thing that can happen to a human being us to find a problem, to fall in love with that problem, and to live trying to solve that problem, unless another problem even more lovable appears.

Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride, or laziness of mind.

A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice.

I may be wrong and you may be right, and by an effort, we may get nearer to the truth

The attempt to make heaven on earth invariably produces hell.

To know Christ Jesus is to seek God.

Hate people on an individual basis only - you must actually get to know someone at least slightly before you can properly hate him or her.

Poetry is not a luxury.

Men who get on well with women are usually those who know how to get on without them.

Let's be clear, I'm a strong woman.

Real genius of moral insight is a motor which will start any engine.

You should hear what my parents wanted to call me. It was between Brown Rice, Neon Hitch and Z. Ziggurat Zanzibar Zandorf. I'm not joking. Imagine fitting that on my passport!

All religions have always hated females.

I don't consciously start writing a play that involves issues. After it's done, I sit back like everyone else and think about what it means.

I wanted to do everything once and for all and be through with it.